Improvement in self-acting equalxzing-vagves



N. PETERS. PHOTO-LITHOGRAPMER. WASHINGTON. D C.

ing Eqnalizing-Valve; and do hereby declare that the cating the course and pressure of the water or other i under side of the elastic diaphragm b, lying on proper @anni @Wire 'JOHN J. sTnIenn, orl PEonIA, ILLINOIS.

Letters Patent No. 102,176, elated April 19, 1870.

IMPROVEMENT IN SELF-ACTING EQUALIZING-VALVES.

The Schedule referred to in these Letters Patent and making part of the same.

To all 'whom it may concern:

Beit known that I, JOHN J. STEIGER, of the city of Peoria, in the county of Peoria and in the State of Illinois, have invented a new and useful Self-actfollowing is a full, clear, and exact description thereof', reference being had to the annexed Ydrawings making a part of this specification, in which like letters of ret'- erence refer to like parts, and in which- Figure 1 represents a perspective view.

Figure 2, a longitudinal section, the arrows indiliquid or fluid,

This invention relates to the application, at points opposite the proper valve-openings in water or other pipes, of two elastic diaphragms 'at separate valveopenings, which, by the pressure at such points,'re act on `proper pistons and lever, to open a valve to relieve pressure and get lid of the same in pipes to dwelling-houses or pipes to bath-boilers, &c., by letting the water olii. automatically.

A represents a valve-chamber in a pipe, G, with closing partition, d, having an opening, a valve, a, resting thereon, with an elastic seat, n, for valve, which is kept in place by proper guides.

The -valve A has a tabular top, which touches the seat, t t, and closing the valve in this direction, andy fastened down by a leather ring and screw-cap, x, under which there is room for vertical play of spindlehead c, whose vstem e slides in the upper neck of the cap x.

The apex of the spindle eis in constant contact with the shorter arm of a lever, D, whose longer arm connects with the co-operating spindle s, hereafter described.-

Around the neck or stem of the cap :t is a thread, on which the ring supporting the fulcrum, g, support for lever is screwed, and by which the lever D vis adjusted to the length of the spindles.

B represents a chamber, partitioned horizontally across the middle by another diaphragm, lt, resting on the seat j j, andV secured above by leather ring and vaulted cap o, in which the spindle z of the spindla-head 'mi slides vertically, its upper end constantly maintaining contact with .the longer arm of the lever D, a hollow being made in the under surface of the armfor this purpose and to retain the lever. The head m of the spindle z rests on the upper surface of the diaphragm. C is the water-pipe connecting these two chambers, and represents any section of supply-pipe, say from four to ve inches in length, and connecting the two cci-operating chambers A and B.

E is another valve-chamber at the entrance of a waste-pipe, E', for carrying ofi' water to relieve pressure in the pipes.

The valve i closing this exit immediately opposite the diaphragm lt above, is kept against the seat at the top of the chamber E by means of a spiral spring, lt, which rests-on a proper seat at the bottom ofthe chamber, and may be'hollowed-out of the upper part ofthe waste-pipe E', a cap, q, sliding onto it, covering the joint and screwing tight onto the threaded end on the lower part of the valve-chambel` E, which is cast with the pipe C.

The'valve i has proper guides to keep it in place, and 'rests by the point of its nipple, s, in a recess in the surface of a Vdisk fastened to the to spring h.

The operation of this invention is as follows:

Paying attention to the arrows, as representing the course of the liquid or i'luid, and premising that the object of this device is to reduce or rather equalize the pressure, (more particularly in water-pipes, in supplying boilers in dwelling-houses, baths, factories, and other places,) when the pipes may be unavoidably subjected to gipat pressure in time of fires when the engines at water-works are forcing forward great volumes of water. In the latter case the water thus forced forward raises the valve c in chamber A, and with it the piston c, (the diaphragm b in this case`cutting ofi' the upward escape of the water,) the spindle head e, pressing the lever D upward, dcpresses the longer arm of the latter, and causing the piston m, by pressure on the other diaphragm, k, to contract the passage for water between the latter and the valve t' at entrance of waste-pipe E', and throwing the extra force ot the water against the valve i, which is accordingly forced to give way, and thus relieve 'such extra pressure from the pipes, thereby relieving both the inductionpipes and the boilers in lfouses from extraneous pressure from main pipes pr from a contrary source, fl. e., from expansion ofthe water by heat in bath-boilers into which such pipes lead.

It will be seen that a balancing action place at ordinary pressures between-the two chambers A and 'B and the vvalve t or waste-valve, nicely regulating the hydrostatic pressure. y

Having thus fully described' my invention,

What I claim therein as new, and desire to secure by Letters Patent, is

l. The chambers A, and B, provided with the diaphragmsb k, connected with th'e two spindles e and z,

reacting on a connecting-lever, D, by whichone of the diaphragme contracts the passage in pipe over a discharge or relieving-valve, i, substantially as and for the purpose' set forth.

l I L p of spiral 4. The arrangement of the chambers A B, pipe C,`

partition' d, valve a, diaphragm b, spindle e, screw-cap fulcrum g, lever D,spindle z, vaulted cap o, dial phragm k, valve i, Spiral spring h, and screw cap q, substantially in the manner and for the purpose as herein set forth.

In testimony that I claim the foregoing self-aeting equalizing-valve, I have hereunto set my hand this 24th day of December, A. D. 1869.

` JOHN J. STEIGER.

Witnesses HENRY W. WELLS, E. THURLOW. 

